Door-fastener



(No Model.) J, OHIVILL. DOOR FASTENER- No. 540,423. Patented June 4,1895.

nrniv'r Futon.

JOHN CHIVILL, OF CHICAGO, ILLIbTOIS:

DOOR-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 540,423, dated June 4,1895.

' Application filed February 25, 1895. Serial No. 539,698- (No model.)

To all whom it may concern.-

Be it known that I, JOHN OHIVILL, of Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements in.Door-Fasteners, of which the following is a full, clear, and exactderesponding to that used in connection with the ordinary look, while atthe same time it may be readily adapted to doors with varying kinds orwithout molding upon the door postythe mainpurpose of my invention beingto provide a detachable and portable door fastener adaptedto the use oftravelers and others who desire to secure a door from within so that itcannot be unlocked from without, or the fastening thereof removed exceptby one upon that side of the door upon which the fastener'is placed; allof which is hereinafter more particularly described and definitelypointed out in the claim.

Figure 1 of the drawings represents a perspective view of my improvedfastener; and Fig. 2 is a horizontal sectional view of'a door anddoor-post, showing a plan view of my improved fastener as the sameappears when in position to lock the door.

Referring to the drawings, a represents a Hat metallic strap or bar uponwhich is formed a screw threaded stem 1) which is integral with thestrap. A thumb-nut c is formed upon the stem which nut is prevented frombeing removed by means of a shoulder or collar 01 formed uponor rigidlyattached to the outer end of the stem. A detent-e is formed upon thestrap a and adapted to fit into the mortise 5 f of the door-post g Fig.2.

The stem 1) is loosely inserted in a slot h, Fig. 1, formed in an arm 7'bent as shown which is provided with a foot is, adapted to rest againstthe door Z intended to be fastened as indicated in Fig.- 2, while thatportion of the arm in which the slot is formed, rests against themolding of the door-post in the manner shown in said Fig. 2. A washer nis adapted to rest in a suitable indentationin the arm, such, forexample as that shown at 0 to prevent the arm from slipping underpressure.

Upon placing the parts in position and tightening the thumb-nut as shownin Fig. 2 the door Z is securely fastened and cannot be openedexcept bythe party upon that side of the door upon which the fastening is placed.

The strap a, is bent, as shown, at its juncture with the stem in orderto permit the door to be opened readily when the thumb nut is loosened.

- If desirable to leave the fastener in place 7 in hotels or elsewherewhich might not otherwise be properly secured.

I am aware that door fasteners have heretofore been made having a screwthreaded strap, a detent thereon adapted to fit in the mortise of thedoor post, a thumb nut and a crossbar. I am also aware of theconstruction shown in the patent to C. A. Orongeyer, No. 258,024, inwhich an adjustable leg is employed to fit the device to the variationin the molding of the door jamb; but I makeno claim to either of theseconstructions, but inasmuch as my device fully overcomes a difficultynot heretofore successfully surmounted which adapts it to doors havingvarying forms of molding or no molding at all upon the door post,

What I claim, and desire to secure by Letters Patent, isr Thecombination with the strap a having the screw threaded stem 19 and bentas shown at itsj unction therewith,of the detent adapted to engage themortise of the door post, the

thumb nut, and the arm jbent as shown aid specification, in the presenceof two subscribarin beinJ provided with a. foot 7c, slot 7L and ingwitnesses, this 19th day of February,1895. indentation 0 constructed andarranged as described, whereby said arm may adapt it- 5 self to thevariations in the form of the door post, substantially as described.

In testimony whereof I have signed this JOHN CHIVILL.

Witnesses:

D. H. FLETCHER, W. H. CHAMBERLIN.

